Limitation of rotation sensing in IORG by Rayleigh backscattering noise
Institute of Opti-Electronics Technology, Beihang University - Beijing 100191, China
2 Key laboratory of micro-nano measurement-manipulation and physics, (ministry of education), Beihang University Beijing 100191, China
Accepted: 29 July 2011
Rayleigh backscattering noise (RBN) in integrated optical resonance gyroscope (IORG) is theoretically and experimentally researched. The SiO2 waveguide resonator performance degradation of IORG due to RBN is analyzed firstly, and then the nonlinear output of IORG caused by RBN is simulated. Finally, opposite slope triangle wave modulation is employed for suppressing the RBN in IORG. Experimental results show that the bias stability of IORG is effectively improved from 45.144°/s to 0.71708°/s, representing the effectiveness of the countermeasure.
PACS: 42.82.Bq – Design and performance testing of integrated-optical systems / 42.81.Dp – Propagation, scattering, and losses; solitons / 42.81.Pa – Sensors, gyros
© EPLA, 2011